Machine foe making paper sacks



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A. WEIDENBUSUH.

' MACHINE FOR MAKING PAPER SACKS.

N0. 424,742. Patented Apr. 1, 1890.

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MACHINE FOR MAKING PAPER SACKS. No.- 424,742. Patented Apr. 1, 1890.

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(No Model.) 17 Sheets-Sheet 4.

A. WEIDENBUSGH. MACHINE FOR MAKING PAPER SAGKS.-

No. 424,742. Patented Apr. 1. 1890.

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(NoModeL) l7 Sheets-Sheet 5. A. WEIDENBUSOH.

MACHINE FOR MAKING PAPER SACKS.

Patented Apr. 1 ,1890.

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(No Model.) A. WEIDENBUSOH.

MACHINE FOR MAKING PAPER SACKS. N 424,742. Patented Apr. 1, 1890.

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A. WEIDENBUSOH. MACHINE FOR MAKING PAPER SACKS.

No. 424,742. Patented Apr. 1, 1890.

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A. W'EIDENBUSGH. MACHINE FOR MAKING PAPER, SACKS.

No. 424,742. Patented Apr. 1, 18.90.

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A. WEIDENBUSGH.

MACHINE FOR MAKING PAPER SACKS. No. 424,742. Patented Apr. 1, 1890.

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A. WEIDENBUSGH.

MACHINE FOR MAKING PAPER SACKS. No. 424,742. Patented Apr. 1, 1890 (NoModel.) 17 SheetsSheet 12.

A. WBIDENBUSGH. MACHINE FOR MAKING PAPER SACKS.

No. 424,742; Patented Apr. 1, 1890.

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(No Model.) 17 Sheets-Sheet 13.

A. WEID-ENBUSOH.

MACHINE FOR MAKING PAPER SAGK'S. No. 424,742. Patented Apr. 1, 1890.

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H H O S U B N E D. I E W MACHINE FOR MAKING PAPER SACKS.

No. 424,742. PatentedApr; 1, 1890.

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A. WEIDENBUSGH.

MACHINE FOR MAKING PAPER SACKS. No. 424,742. Patented Apr. 1, 1890.

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(No Model.) 17 SheetsSheet 16.

A. WEIDENBUSGH. MACHINE FOR MAKING PAPER SACKS.

No. 424,742. Patented Apr. 1, 1890.

(No Model.) 17 Sheets-Sheet 17.

A. WEIDENBUSGH.

MACHINE FOR MAKING PAPER SACKS. No. 424,742. Patented Apr. 1,1890.

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ZV/M vle/wm: J'l WGl LKOZ I UNITED SATES PATENT OFFICE.

ADOLF \VEIDENBUSCH, OF DARMSTADT, HESSE, GERMANY.

MACHINE FOR MAKING PAPER SACKS.

SPECIFICATION forming part of Letters Patent No. 424,742, dated April 1,1890.

Application filed March 23, 1888. Serial No. 268,311. (No model.)Patented in Germany August 3, 1886, No. 41,433, and in England January17,1888,No.730.

To all whom it may concern:

Beit known that I, ADOLF VVEIDENBUSCH, of Darmstadt, in the Grand Duchyof Hesse and German Empire, have invented a new and useful Machine forMaking Paper Sacks, (for which I have received Letters Patent inEngland, No. 730, dated January 17, 1888, and in Germany, No. MASS,dated August 3, 1886,) of which the following is a specification,reference being had therein to the accompanying drawings.

This invention relates to machinery in which prepared paper tubespreviously cut into certain lengths are made into paper bags of thedescription known in the trade as square or block bottomed paper bags;and it consists in the arrangements and 0011b binations of parts wherebythe several operations connected with the manufacture of the said bagsare mechanically performed, as hereinafter explained.

Figures 1 and 2 of the accompanyin g drawings illustrate the generalarrangement of a machine according to this invention in side elevation,Fig. 2 being simply a continuation of Fig. 1, the drawing being dividedalong the line 6 a, Fig. 1. Figs. 3 to 5 illustrate that part of themachine which is markedl in Fig. 1, and by which the paper tube iscreased on two sides. Fig. 3 represents a transverse section along theline i C, Fig. 5. Fig. at shows the creasing device in section along theline 1; 1 in Fig. 5, which represents this part of the machine,corresponding to I, Fig. 1, in plan, certain parts being represented asbroken away or removed, in order to show the arrangements beneath themmore clearly. Figs. (5 and 7 illustrate that part of the machine marked11. in the general view, Fig. 1, and which is employed to fold the papertube after it has been creased in the preceding part of the machine.Fig. 6 is a transverse sec tion taken along the line a 0-, Fi 1,illustrating this arrangement; and Fig. 7 is a plan of the same, certainparts being removed to avoid confusion. Figs. 8 to 11 illustrate thethird section of the machine, marked III in the general view, being thepasting mechanism, which applies paste to certain parts of the bottom 01the paper tube creased in the preceding mechanism. Fig. represtmts thispart of the machine in end elevation, partly in section, (along the lineB Fig. 1,) Fig. 9 being a side elevation of the same. Figs. 10 and 11illustrate details of the pushin g mechanism, drawn to a larger scale,and show an arrangement, hereinafter described, which throws the pastingmechanism out of action when no paper is supplied to the machine. Figs.12 and 13 relate to that part of the machine marked IV in Fig. 1,wherein the pasted ends of the paper tube are creased along the requiredlines and pressed down to form the bag-bottom. Fig. 12 represents asection along the line 7 7, Fig.1; and Fig. 13 shows this part of themachine in plan. Figs. 14. and 15 represent, respectively, an endelevation, partly in section, along the line 6 6 and a plan of that partof the machine marked V in the general view, Fig. 2. In this part of themachine the bag-bottom which previously stood at right angles to thetube forming the sides is turned down, so that the bag is flattened andenabled to pass between rollers and endless cloth bands or aprons. Figs.16 and 17 illustrate the driving-gear of the machine indicated at VI,Fig. 2, Fig. 16 being an end elevation and Fig. 17 a side elevation,seen from the opposite side to the viewin Fig.2. Figs.18 to 2%illustrate the progressive stages through which the paper tube is causedto pass in the course of its conversion into a bag. Figs. 18, 1S, and

18" show how the paper blank is creased in section I of the machine,Figs. 3 to 5. Fig. 18 represents the bag, viewed from above, as it liesin the machine. Fig. 18 is a side view, and Fig. 18" an end view, of thesame. Figs. 19 and 19 illustrate the next stage, which is reached inpassing through section II of the machine, Figs. 6 and 7, wherein thecreases previously formed are opened to form the diamond fold,and thebag-bottom presents the form indicated in Fig. 19, which represents thefront end of the bag, Fig. 19 being a side view of the same. Fig. 20shows how the paste is applied in the pasting apparatus, Figs. 8 to 11,the parts covered with paste being shaded. Figs. 21 and 21 represent anend and side elevation of the bag in the next stage of niannfaetureperformed by the creasing mechanism illustrated in Figs. 12

and 13. Figs. 22 and 22 show how the other or finishing folds in thebottom of the bag are made in the mechanism illustrated in Figs.

12 and 13, Fig. 2 being an end view, and

Fig. 22 a side elevation,'of the bag with the bottom completely formed.Fig. 23 shows the bag in the act of being flattened in the mechanismillustrated in Figs. 15 and 16, and Fig. 24. represents the bag in thecompletelyflattened form in which it leaves the machine.

All the parts ofthe machine are connected together, so as to bedependent on one another and act in concert, receiving motion from apulley K, Figs. 2 and 17. The paper blank is carried through the machineon endless bands or aprons, and the machine is entirely automatic in itsaction, so that no hand labor is required. The blanks are forwardedthrough the machine by means of endless carrying-bands 0, Figs. 1, -2,and 5, passing over rollers B, being maintained in the proper state oftension by means of tension-rollers F, Fig. 1, and having anintermittent motion imparted to them from the driving mechanism.

The intermittent motion of the carryingbands is produced as follows: Thedrivingpulley K, Figs. 2, 16, and 17, drives a shaft L, carrying apinion L, which imparts a continuous rotary motion to a toothed wheel Lfixed .on a driving-shaft A, extending from one end of the machine tothe other, Figs. 1 and 2. This driving-shaft A carries a bevel-wheel 0,Figs. 14 and 15, gearing with a corresponding wheel .0 From this. wheelthe rotary motion is transmitted through a shaft 0 to a toothed wheel 0Figs. 14 and 15, which drives a toothed wheel 0 Fig. 14, and shaft 0 Theshaft 0 is provided at its right hand extremity, Fig. 15, with a crankT,workin g a connecting-rod 0, connected to a crank q, Figs. 16 and 17,carrying a pawl q. The crank q acts through the pawl g on aratchet-wheel Q.

' The throw of the crank T is less than that of the crank q, so that thecontinuous rotation of the crank T produces an oscillating motion of thecrank g. This oscillating motion of the crank q produces an intermittentrotary motion of the ratchet-wheel Q and of a toothed wheel J fixed onthe same shaft, whence the same movement is transmitted to a toothedwheel J fixed upon the shaft of the lower roller of a pair of rollers Jcarrying the forwarding-bands C. The axis of the lower roller carries atoothed wheel J, driving a wheel J fixed on the axis of the upperroller, so as to cause the two rollers to rotate in opposite directionsat thesame peripheral speed with an intermittent motion, by which thebands 0 and the bag-blanks held between the said bands are propelledthrough the machine.

The bag-blanks are fed into the machine at D, Fig. 1, whence they travelon the bands 0 through the different parts of the machine in succession,and in order to insure that the blanks shall be presented to thecreasing and other devices in the proper position a feedcomb U, Figs. 3"and 5, is provided, which returns the blanks in the proper position onthe traveling bands. The feed-comb is provided with teeth, as shown inthe drawings, which, when elevated above the carrying-bands O, enablethe blanks to pass, but when lowered, as in Fig. 3, stop theforward-motion of the said blanks. The movement of the comb U is derivedfrom a came on the driving-shaft A, which acts upon a roller a on theend of a lever a, Figs. 3, 5, 12, and 13. The lever CLiS fixed upon ashaft E, working in bearings on the side frame of the machine, and isconnected by a bar V with the comb U, which is pivoted or mountedloosely on the shaft E.

When the lever-a is raised by the action of the cam a the comb iselevated and allows the blanks to pass, and when the lever a descendsthe comb U blocks the passage of the blanks. During one forward motionof the intermittently-moving bands 0 the comb U is stationary, sothat'the blanks are brought close up to and in contact with thecombteeth. The comb can be adjusted on the bar V by means of screws,.sothat the feed of the blanks can be adjusted according to theirdimensions.

There are two sets of carrying-bands, one above the other, the lowerbands being extended at the feed end of the machine for the reception ofthe blanks at D, Fig. 1.

The first section of the machinenamely, the creasing apparatus indicatedat I, Fig. 1folds the corners of the blank, turning them upward anddownward along the lines 7 y y, Figs. 18, 18, and 18", so as to preparethe paper for the subsequent folding operations that are necessary toform the bottom of the finished bag. This preliminary creasing isperformed by clamping the blank. between two triangular-shaped plates,so that the corners of the blank project. These corners are first turnedupward and then downward by means of a bar or creaser with a wipingaction. The bag-blank, being deposited at D, Fig. 1, upon thecarrying-bandsfl, is carried forward by the intermittent motion of thelatter to the creasing mechanism. The paper tube is deposited upon thecarryingbands in such a manner that one end projects, and with thisobject aspecial carryingband C, Fig. 5, is provided, which is arrangedoutside 011 the left at B and supports the free overhanging end of theblank at which the creases are to be made. By these means the paper tubeis brought between two plates b and X, Figs. 3, 4, and 5, which areprovided with three-cornered plates or jaws 1r. hen

the blank is placed by the carrying-bands in the required position.relatively to the jaws b the upper plate I), with the jaw b attached Thedownward movement of ing or creasing mechanism, and is connected at bothends with levers l), pivoted l on the shaft E and provided at theirlower extremities with rollers 1), bearing against the cams b rotatingwith the driving-shaft A, Figs. 3, 5, and 6. \V hen the jaws b arebrought together on the paper by the action of these cams, wipers 0 Fig.4, are moved along to the said jaws and caused to fold down theprotruding corners of the blank with a wiping action. The upward anddownward motion of the wipers is produced by cams 0' 0 Fi 5, acting onfriction-rollers c c on the ends of bars 0 and rotating with thedrivingshaft A, Figs. 3 and 5. By these means reciprocating motion isimparted to the bars 0", which opcrate toggle levers 0 0 having theirhearing at c". The toggle-lever c is connected to a frame formed byplates 0", carrying-the wipers 0 and move this frame with the saidwipers upward and downward alternately. These wipers are maintained at acertain distance apart by means of vertical bolts or screwed rods, asindicated in Fig. 3. The blank having been clamped. in the properportion between the jaws b the corners are creased or bent upward anddownward by the movements of the wipers e c being folded as indicated inFigs. 18, 1S, and 18. After the corners have been creased in the mannerindicated the upper plate 0 rises with the jaw l) and releases theblank, which is then by the next forward movement of the carrying-bandsG, timed to take place at this moment, carried forward to the nextdivision of the machine. The lower jaw b is fixed to the plate X, whichforms partof the side frame, being fixed to the frames XV V V X isanother side plate fixed over the plate X, and has a portion cut away toallow of the movement of the upper movable jaw b and of the plate bFigs. 3, 4t, and 5. The wipers c are attached to the plates 0% by nutsand bolts working in slots to admit of adjustment of the wipers. A, Fig.5, is a bearing for the driving-shaft A, and B is a bearing for the axisof a roller which is made longer than the others to work the-extracarrying-band C, Fig. 5.

The mechanism hereinbefore described serves to form the preliminaryfolds required to prepare the bag-blank for the subsequent operations,the corners being creased both ways, upward and downward, to prepare thebottom edges for being folded in opposite directions. To effect thisthatis to say, to impart to the blank the form indicated in Figs. 19 and19-a folding apparatus, drawn to a larger scale in Figs. 6 and 7, isemployed. hen the blank leaves the creasing apparatus hereinbeforedescribed, it is forwarded by the carrying-bands C to a second comb U,operated by the shaft E in the same manner as the comb at the entranceto the machine. This comb, likewise marked U in the drawings, Figs. 6and 7, serves to arrest the forward motion of the blank. Thelattcrpasses between the two plates I) and X, the upper plate b being movedupward when the paper tube has arrived at the proper position. With thisobject the plate b is fixed, as hereinbefore described, to the lever-arml), and is operated by a cam Z) on the driving-shaft A,

air-pumping cylinder M, Fig. 1. This cylinder exhausts air from thetubesS, so that paper placed over the orifices of these tubes in thelower plate X is pressed against the surface of the plate by suction.The air-pump Mis provided with a piston and piston-rod N, which receivesmotion from a crank P, driven by toothed gear at the delivery end of themachine and operated by the driving-shaft A, Fig. 2. At the head orfront of the foldingmaehine there is provided a plate (1 which pressesthe folds atthe proper time. This presser moves in an arc of a circleand is alternately moved away from and applied against the surfaces ofthe plates b and X, being operated by a lever-arm d, pivoted to asupport (Z. This lever-arm d is connected by a connecting-rod (Z to alever (Z oscillating on the shaft E and provided with a roller (1,bearing against a cam d on the drivingshaft A, which is timed to actuatethe presserlever (Z at suitable intervals. The lever-arms d are madeadjustable within certain limits by means of a loose disk d placed onthe shaft E, and to which the said lever-arms are adj ustably connected,as indicated in Fig. 6. A roller f is also provided, which serves tofold over the lower part of the bottom of the paper tube. This roller f7 is operated and caused to move upward an d downward alternately by acam f on the driving-shaft A by the intervention of a roller f on alever or arm f acting on levers f f. The drivingshaft A passes throughan elongated opening or slot in the arm f and the roller-f on this armis maintained in contact with the cam f by the action of a spring f. Thearm f is capable of adjustment relatively to the lever f the said armand lever being provided with a number of correspondingholes for thereception of a bolt, which connects them together in any requiredposition. By this means the center of the arm f can be ad justed withincertain limits on the lever f". The lever-arm f is connected tothe-lever f by a joint or hinge, and a springf, fixed 011 the end of thelever f, as indicated in Fig. 6, causes the roller J" to bear with acertain amount of pressure against the paper on the surfaces of theplates Z2 and X.

The upper part or flap of the bag-bottom is folded or turned back by aroller 6", working in bearings in a reciprocating block orpiece h Theroller e is operated by a cam e on the shaft A. This arm acts upon aroller e on the upper extremity of a lever e, which is slotted similarlyto the lever f so as to be IIO

